Abstract: A labelling machine comprising a supply spool support (12) adapted to receive a supply spool (28), a takeup spool support (14) adapted to form a takeup spool (32) of web (30) from which at least some labels (74) have been removed, a motor (40) arranged to turn the takeup spool, and a controller to control operation of the motor. A web path (16) is defined between the supply spool and the take-up spool, and the controller is arranged to control the motor to turn the take-up spool so as to cause controlled predetermined linear movement of a web along the web path and onto the take-up spool, furthermore comprising a sensor (50) operable to sense linear displacement of the web and/or displacement of the web in a direction other than the direction of the web, a printer (34) movable between a first position and a second position, and a separator surface (24) comprising a first portion inclined relative to the web path.

Abstract: A thickness measuring device of a laminating machine includes a mount, a stepper motor, a screw rod, a first contact-activated element, a second contact-activated element, and a microcontroller unit. The stepper motor is coupled to the mount. The screw rod is interlocked with the stepper motor. The first contact-activated element is provided at a position corresponding to and some distance below the screw rod. The second contact-activated element is provided at a position corresponding to and some distance above the screw rod. The microcontroller unit is electrically connected to the stepper motor, the first contact-activated element, and the second contact-activated element so as to provide initialization setting and exercise judgment and control after receiving a thickness measurement. Thus, the thickness of an object to be detected can be conveniently measured.

Abstract: Disclosed is an apparatus for manufacturing a printed circuit board. The apparatus for manufacturing the printed circuit board includes: a supplier for supplying a substrate of a sheet type; a first printer for printing paste on the substrate supplied from the supplier to thereby form preliminary bumps; a provisional dryer which is arranged on one side of the first printer and provisional-dries the preliminary bumps; a second printer which is arranged on one side of the provisional dryer to be in series to the first printer and prints paste on the preliminary bumps; a dryer which is arranged on one side of the second printer and dries and cures the preliminary bumps to thereby form bumps; and a penetrator which is arranged on one side of the dryer, and allows the bump to pass through prepreg and bonds the prepreg and the substrate together.

Abstract: A sheet attaching apparatus includes a non-adhesive guide sheet for leading the peeled sheet to the attaching position while keeping away from the substrate; a stopper to which forward edges of the substrate and the sheet contact, movable between a position across the feed path and a position off the feed path; a movable press roller for pressing the forward portion of the sheet onto the forward portion of the substrate to attach the sheet onto the substrate at the attaching position; and a feed roller arranged facing the press roller and for discharging the adhered sheet and substrate from the attaching position. The guide sheet has slits extending in the feed direction at the forward portion. The press roller presses the forward portion of the sheet to the forward portion of the substrate through the slits so as to attach the sheet S onto the substrate.

Abstract: The invention concerns a layup machine, economic in terms of capital costs, for producing large-sized cylindrical panels made of composite material covering an angular sector less than 360° and allowing high layup productivity. The device of the invention allows a fixed cylindrical mandrel to be placed on the machine's table and the tape laying head to be moved over the surface of this mandrel, the actuator carriage supporting said tape laying head moving around the mandrel along an at least partially circular track.

Abstract: Laser lift off systems and methods may be used to provide monolithic laser lift off with minimal cracking by reducing the size of one or more beam spots in one or more dimensions to reduce plume pressure while maintaining sufficient energy to provide separation. By irradiating irradiation zones with various shapes and in various patterns, the laser lift off systems and methods use laser energy more efficiently, reduce cracking when separating layers, and improve productivity. Some laser lift off systems and methods described herein separate layers of material by irradiating non-contiguous irradiation zones with laser lift off zones (LOZs) that extend beyond the irradiation zones. Other laser lift off systems and methods described herein separate layers of material by shaping the irradiation zones and by controlling the overlap of the irradiation zones in a way that avoids uneven exposure of the workpiece.

Abstract: A single chamber adsorption concentrator unit is described that utilizes low grade heat to drive an adsorbent/adsorbent working pair to separate a solvent from a solute/solvent mixture. One preferred application of the device of the present invention is separating water from the salt brine produced by the aluminum smelting industry. The brine solution is introduced into a single chamber shell proximate the concentrator evaporator where the water in the brine can freely evaporate and the resulting water vapor freely flow without inhibition to be either absorbed into the adsorbent modules or condensed by the condenser. The free flow of water vapor is facilitated by continuous operation of the condenser and by maintaining the brine solution at a higher temperature than the cooling fluid driving the condenser. A mist eliminator with a wash down feature located intermediate to the evaporator and the silica gel is provided to collect contaminants that may be carried from the evaporator by the vigorous boiling.

Abstract: The present invention relates to a method for removing isocyanate from a reaction product of isocyanate with compounds reactive towards isocyanates, the reaction product being applied to the surface of a rotating body A, the reaction product flowing over the surface of the rotating body A to an outer region of the surface of the rotating body A and isocyanate which was used for the preparation of the reaction product and has not reacted evaporating from the mixture in the process.

Abstract: A retractable awning that transforms automatically into a gable or arch is disclosed. The awning sheet extends using articulated hinged arms. A first end of each articulated arm is hingedly affixed to a stationary surface. The two articulated arms provide vertical support while extending the awning sheet. A swiveling hinge interface connects the ends of the articulated arms and the front support member. The front support member is a flexible spring member and resiliently arches the awning when extending. In another embodiment, the front support member is a left member and right member connected by a hinge and a spring. The spring resiliently urges the left and right member into a gabled configuration, thereby gabling the awning. When retracting the awning, the ends of the front support member and awning sheet are pulled outwards, thereby counteracting the naturally gabled or arched configuration.

Abstract: A stacking panel covering for an architectural opening includes a headrail and a plurality of suspended from the headrail. The panels form an overlapped stack at one end of the headrail when the stacking panel covering is opened, and cover the architectural opening when the stacking panel covering is closed. The panels are piggybacked on those adjacent thereto, so that they stack, one behind the next, when the stacking panel covering is opened, and so that each pulls the next adjacent thereto as the stacking panel covering is being closed. The panels themselves may be planar, or convexly curved in a horizontal direction and substantially straight in a vertical direction.

Abstract: A curtain assembly includes a headrail, a curtain, a safety loop, and a pull rope. The curtain is coupled to the headrail. The safety loop has a first loop portion that is fastened to the curtain, and a second loop portion that includes first and second arms, each of which extends from the first loop portion and has a free end. The first and second arms of the second loop portion define a hole therebetween. The pull rope extends through the hole in the second loop portion of the safety loop, has an end fastened to the curtain, and is operable so as to raise or lower the curtain.

Abstract: A window shade having a lift cord that is partially or entirely contained within a tape. Preferably, the tape is made of fabric or cloth. In a first embodiment, the tape portion of the window shade is made of a cloth that is woven to form a tube. The lift cord or cords of any window shade are contained within the hollow portion of the tube. Additionally, the cloth tape is spot stitched to the window shade at a spacing small enough to prevent the entry of a head of a child, person, or pet. As a lowered shade is raised by the lift cord, the lift cord tape tightly gathers so as to prevent the formation of loops, or at least loops large enough to engulf a head.

Abstract: A curtain frame having a top horizontal rail is revealed. The top horizontal rail formed by a top plate and a side plate. Moreover, a bracket is connected with each of two ends of the top plate and a curtain controller is mounted between the brackets. The curtain controller includes a rotating shaft for control of extension and retraction of a curtain, and a bead chain that drives the rotating shaft to rotate. Furthermore, a plurality of fix bases is locked on the top of the top horizontal rail and is fixed on the ceiling by insertion of threaded fasteners. Or the curtain frame is installed between walls on two sides by the brackets on two ends thereof to meet practical needs. In addition, the top plate prevents dust accumulation and keeps the cleanness. Thus the components of the curtain frame can operate normally.

Abstract: A screen unit includes: a screen which has a first side and a second side opposing to each other in a first direction and extending substantially in parallel with each other; a first supporting portion extending along the first side to support the first side; a second supporting portion extending along the second side to support the second side; and a plurality of connecting mechanisms each of which extends between the first supporting portion and the second supporting portion, and expands and contracts in the first direction to move the second supporting portion close to and away from the first supporting portion, wherein the plurality of connecting mechanisms are disposed in parallel with the first supporting portion, and are located almost linearly symmetric with respect to a center line connecting approximately the center of the first side and approximately the center of the second side.

Abstract: In a screen device, a pair of vertical rails 24 arranged on the front and back sides of a screen 8 so as to oppose to each other are connected by connecting members 30 and are fixed between a pair of sliding guide frames 10a and 10b with the intermediary of the screen. The connected vertical rails are integrally slidable in the direction parallel to the direction of sliding movement of a screen mounting frame, so that the screen is restrained from being deflected even when it receives a wind pressure in the closed state when the width in the opening and closing direction is large.

Abstract: Process for the production of paper, board and cardboard having high dry strength by addition of at least one water-soluble (a) polymer comprising vinylamine units and at least one (b) polymer comprising ethylenimine units and at least one water-soluble polymeric anionic compound to a paper stock, draining of the paper stock with sheet formation and drying of the paper products, the water-soluble cationic polymers (a) and (b) being metered in any sequence or as a mixture into a paper stock, and papers which are obtainable by this process.

Abstract: A gypsum-fibre composite product, wherein the gypsum appears as crystals on the surface of the fibre and wherein the gypsum crystals are obtained by contacting calcium sulphate hemihydrate and/or calcium anhydrite and an aqueous fibre suspension. Also disclosed is a process for the preparation of the gypsum-fibre composite product. The composite product can be used as a filler pigment or coating pigment in the production of paper.

Abstract: A method for detecting at least one value at least indirectly characterizing the properties of a surface in a material web treatment device. The method includes the steps of illuminating the surface at least at two measuring points with at least one emission source, simultaneously detecting at least one value at least indirectly characterizing a reflectivity of the surface at said each of the at least two measuring points with a detector device and evaluating the reflectivity.

Abstract: Alloy products are produced with a waxless casting process. A model of a ceramic casting vessel (34) defining a desired product shape is digitally divided into sections (10, 40, 42). Each section is translated into a soft alloy mater tool (14) including precision inserts (20) where needed for fine detail. A flexible mold (24) is cast from each master tool, and a section of the ceramic casting vessel is cast from the respective flexible mold. The vessel sections are assembled by aligning cooperating precision features (58, 60) cast directly into each section and the alloy part is cast therein. No wax or wax pattern tooling is needed to produce the cast alloy product. Engineered surface features (54) may be included on both the interior and exterior surfaces of the shell sections.

Abstract: An investment casting process for a hollow component such as a gas turbine blade utilizing a ceramic core (10) that is cast in a flexible mold (24) using a low pressure, vibration assisted casting process. The flexible mold is cast from a master tool (14) machined from soft metal using a relatively low precision machining process, with relatively higher precision surfaces being defined by a precision formed insert (22) incorporated into the master tool. A plurality of identical flexible molds may be formed from a single master tool in order to permit the production of ceramic cores at a desired rate with a desired degree of part-to-part precision.

Abstract: An investment casting process wherein the wax pattern tool (44) is flexible to facilitate removal of the tool from the cast wax pattern (52) even when the cast shape would otherwise require multiple pull planes. The flexible tool may include a flexible insert (42) precisely indexed to a surrounding coffin mold (40), and thereby to an enclosed ceramic core (10). Positioning pins (106) may extend from the flexible tool to make compliant contact against the core prior to a wax injection step. The surface of the resulting wax pattern may contain an engineered topography (36) replicated through the flexible surface from a master tool (12). The flexible tool may encase thermally conductive or magnetic particles (92), or other active device (96) such as a sensor or vibrator which is operable during wax injection.

Abstract: A method for manufacturing a workpiece with labels includes a forging step for forging an initial billet, a lathe machining step for forming the initial billet into a first treated billet, a rolling step for forming a second treated billet by rolling at least one labeling indentation on the first treated billet, a heat treatment step for reinforcing a structure strength of the second treated billet, a dyeing step for obtaining a third treated billet by dyeing a surface of each labeling indentation on the second treated billet with a dyestuff, a polishing step for forming a fourth treated billet by polishing the third treated billet, and an electroplating step for electroplating on the fourth treated billet.

Abstract: The invention relates to a casting tool for producing workpieces from light metal alloys. The system includes a positioning element, a core part, a first mold part structured to carry the positioning element and be movable toward the core part, and a core part support structured to support the core part. The system also includes at least one stop structured to limit movement of the front mold part toward the core part and to allow the positioning element to be introduced into the core part, whereby the positioning element holds the core part in a predetermined position for casting.

Abstract: Disclosed is a lateral seal of a casting gap formed between two casting rollers of a strip casting machine. Said lateral seal can be placed against the casting rollers on the front face. The inventive lateral seal (10) comprises a first moist part (12) and a second part (13) that is assigned to the front faces of the casting rollers (1, 2). Said second part (13) forms a type of snout shape encompassing two legs which extend along the front faces of the casting rollers, join each other at the bottom, above a kissing point, so as to form a common area, and between which the first part (12) protrudes from above. An insulating layer (18) which separates the two parts (12, 13) from each other is inserted between said first and second part.

Abstract: A metal delivery apparatus for casting metal strip includes at least one elongated segment having a main portion extending longitudinally through the main portion with end walls at opposite ends thereof, the main portion communicating with outlets along opposite sides of each segment adapted to upwardly discharge flow of molten metal into a casting pool.

Abstract: The present invention relates to a brass alloy having superior stress corrosion comprising: 59.0-64.0 wt % Cu, 0.6-1.2 wt % Fe, 0.6-1.0 wt % Mn, 0.4-1.0 wt % Bi, 0.6-1.4 wt % Sn, at least one element selected from Al, Cr and B, the balance being Zn and unavoidable impurities, wherein the content of Al is 0.1-0.8 wt %, the content of Cr is 0.01-0.1 wt %, the content of B is 0.001-0.02 wt %. The alloy according to the present invention does not contain toxic elements such as lead and antimony, has superior corrosion resistance and good cuttingability and is suitable for the accessories in the potable water supply systems produced by casting, forging and extruding.

Abstract: A compound heat exchanger includes a plurality of adjacent, continuous fins. Each fin defines a channel having an associated fin axis. A first portion of each channel extends along the axis, and a second portion of each channel is tortuous in opposing directions about the axis.

Abstract: A geothermal heat exchange system for use in a gas turbine power plant that includes an inlet plenum that directs a flow of air to a compressor that compresses a flow of air that is then mixed with a fuel and combusted in a combustor such that the resulting flow of hot gas is directed through a turbine, the geothermal heat exchange system comprising means for exchanging heat between a ground and the flow of air moving through the inlet plenum.

Abstract: A method for heat exchange between inbound vehicles and outbound vehicles moving through a drying furnace. Conveying tracks, one for the inbound vehicles conveyed into the drying furnace and another for the outbound vehicles conveyed out from the drying furnace, are provided in a single closed cross-section conduit. The closed cross-section conduit is divided in a conveying direction into a plurality of areas. Heat exchange takes place between the outbound vehicles and inbound vehicles in each of the divided areas via atmospheric air in the areas.

Abstract: An exemplary heat dissipation device includes a heat sink and a fixing frame. The heat sink defines receiving depressions at an outer peripheral surface thereof. The fixing frame includes a peripheral side plate encircling the heat sink, fixing legs extending downwards from the side plate, and an elastic member disposed on the side plate. Protruding members extend inwardly from the fixing legs. The heat sink is rotatably received in the fixing frame. When the heat sink is in an unlocked state, the protruding members align with the receiving depressions, respectively. When the heat sink is rotated to a locked state, the protruding members abut a bottom of the heat sink thereby limiting axial movement of the heat sink relative to the fixing frame and the elastic member is received in a corresponding receiving depression and limit rotation of the heat sink in both clockwise and counterclockwise directions.

Abstract: The present invention relates to a hydrogen storage system using a hydrogen storage material and can increase a heat exchanging efficiency by improving a contact frequency to the heat exchanger by vibrating the heat exchanger that is mounted in the hydrogen storage tank using the hydrogen storage material by using a vibrator to induce resonance vibration of the packed storage material powder.

Abstract: Methods and apparatuses for cleaning heat exchangers and heat exchanger components utilizing thickness mode ultrasonics. Heat exchanger components are placed in a tank. The tank is filled with cleaning media. One or more thickness mode transducers are placed in the tank and the thickness mode transducers are operated to clean the tank. In further embodiments, one or more thickness mode transducers are integrated within a heat exchanger. The transducers are operated to clean the heat exchanger space and components located therein.

Abstract: A two-phase heat transfer system includes an evaporator unit configured to receive heat from a source, a liquid line fluidly connected to the evaporator unit, a vapor line fluidly connected to the evaporator unit, and a condenser. The condensing unit includes a thermal capacitance device and a condenser integrated with the thermal capacitance device. Methods of forming a thermal storage unit include preparing a honeycomb core to receive a phase change material, metallurgically bonding end pieces to the core, to thermally link the end pieces to the core, and bonding the end pieces together to form a seal for holding the phase change material within the core.

Abstract: A system for using the waste heat produced from the production of liquefied or solidified heat sink refrigerant in the production of fuel that includes a liquefied or solidified heat sink refrigerant production system, a fuel production system, and a heat exchanger. The liquefied or solidified heat sink refrigerant production system produces waste heat which is transferred through the heat exchanger to power the fuel production system.

Abstract: A heat-dissipating plate has a casing and a supporting structure, where the casing has surrounding walls to define a receiving compartment therein confined by an inner wall. The inner wall is integrated with a capillary structure. Disposed inside the receiving compartment, the supporting structure includes a meshed partition and a plurality of columns. The meshed partition has a plurality of holes and joined-openings. The columns are fixed in the joined-openings and abut against the inner surface of the walls. The associated manufacturing process for the heat-dissipating plate is easily to accomplish.

Abstract: Apparatus, systems, and methods for efficiently cooling computing devices having heat-generating electronic components, such as, for example, independently operable servers, immersed in a dielectric liquid coolant in a tank.

Abstract: A device for cooling a vehicle battery is provided that includes a plurality of electrical storage elements, and a cooling element having ducts for a fluid to flow through, wherein the electrical storage elements are in thermal contact with the cooling elements and heat can be transmitted from the storage elements to the fluid, and wherein the cooling element which comprises the ducts is embodied as at least one extruded profile.

Abstract: A system for controlling the temperature of a rack includes a connecting plenum configured to receive incoming cooling air from outside a rack for cooling the rack; a front plenum connected to the connecting plenum and configured to receive cooling air from the connecting plenum and deliver the cooling air to the rack, the cooling air being warmed by powered electrical components as it passes through the rack; at least one ventilator for recycling warmed cooling air from the rack back to the connecting plenum to be mixed with incoming cooling air; a sensor for sensing temperature of air in the rack; and a controller for controlling the at least one ventilator based at least on the sensed temperature.

Abstract: An exemplary fan module a main fan and an assist fan. The main fan includes a rotor. The rotor of the main fan includes a hub and a plurality of blades around the hub. The assist fan is located below the hub of the main fan. The assist fan includes a rotor. The rotor of the assist fan includes a shaft and a plurality of blades around the shaft. The shaft of the assist fan is fixed on the hub of the main fan. The rotor of the assist fan is driven to rotate by the main fan, and therefore produces airflow towards a central portion of a heat sink.

Abstract: The invention relates to a device (1) enabling the exchange of heat between a first fluid (2) and a second fluid (3) flowing counter current through the device, comprising: an outer casing (4) sealed against the two fluids, having a long shape that extends between first (7) and second (9) ends; a wall (5) enabling heat exchange between the fluids, housed inside the outer casing; a first inlet (6) for the first fluid (2), formed at the first end (7) of the outer casing; a second inlet (8) for the second fluid (3), formed at the second end (9) of the outer casing (4) opposite the first end (7), the aforementioned exchange wall (5) extending between the first (6) and second (8) fluid inlets; a first outlet (10) for extracting the first fluid (2) from the outer casing (4), formed in the area at the first end (7); a second outlet (11) for extracting the second fluid (3) from the outer casing (4), formed in the area at the second end (9); a first pipe (12) enabling the flow of the first fluid (2) inside the outer c

Abstract: An aircraft heat exchanger that exchanges heat between fluid, like air, to be warmed and a medium, like a liquid, to be cooled has a first path that encounters the fluid to be warmed and carries the medium at a first temperature. A second path carries the medium at a second temperature adjacent to the first path. An insulation gap is disposed between the first path and the second path so that heat exchange between the first and second path is minimized.

Abstract: A microchannel heat exchanger includes for each channel, a serpentine shaped tube for providing a plurality of parallel flow passes for successively conducting fluid flow therethrough, and being fluidly interconnected between an inlet and an outlet manifold. Multiple circuits are obtained by the individual serpentine shaped tubes. Various methods are provided for forming the serpentine shaped tubes.

Abstract: A heat exchanger includes a tube bundle including a plurality of heat exchanger tubes, each of the heat exchanger tubes having an inlet, an outlet, an outer surface, and a generally U-shaped bend region disposed between at least two straight tube ends, wherein at least a portion of the at least two straight tube ends includes flat tubes, a jacket part disposed around the tube bundle to enclose at least a portion of the tube bundle, wherein an interior is formed between the tube bundle and the jacket part to receive a coolant around the outer surface of each of the heat exchanger tubes, and a casing cover coupled to the jacket part to form a fluid tight seal therebetween, wherein the inlet and the outlet of each of the heat exchanger tubes fluid-tightly passes through the casing cover and extends outside of the casing cover.

Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided which include manifold configurations designed to promote mixing of vapor phase and liquid phase refrigerant. The manifolds contain flow mixers such as a helical tape, sectioned volumes, and partitions containing apertures. The flow mixers direct the flow of refrigerant within the manifold to promote a more homogenous distribution of fluid within the multichannel tubes.

Abstract: The present invention provides a novel fins-on-tubes type evaporator/heat exchanger system that is optimized for energy-saving inductive heating thereof, for example by way of application of Pulse Electro-Thermal Deicing/Defrosting (PETD) or equivalent technique thereto, by configuring it to increasing its resistance to a value at which the system's reactance at its working frequency is comparable to, or less than, its electrical resistance. Advantageously, the inventive system may be advantageously configured to comprise the same form factor and interface as a conventional fins-on-tubes type evaporator/heat exchanger component, such that the inventive evaporator/heat exchanger system may be readily utilized for replacement thereof.

Abstract: A heat exchanger grooved tube is made of a copper alloy having a 0.2% proof stress of greater than or equal to 40 N/mm2, and the relationship among the fin width b, the number N of fins (3), and the root thickness t is represented by 8<bN/t<20.

Abstract: A finned tube for heat transfer from one medium to a second medium, and the method of manufacture, is disclosed. A helical fin of the finned tube has an area of compressed fins positioned proximate an insertion section which has a metal tube exposed with the helical fin removed therefrom. The compressed fins are a portion of the helical fin which has been compressed so that the helical fin in the area of the compressed fins is more closely spaced than the remaining portion of the helical fin. A base portion of the helical fin in the area of the compressed fins is layered and compressed on itself and is compressed against the metal tube. The layers of the base portion are compressed together and to the metal tube of the finned tube, which causes the layers of the base portion to bind together and bind to the metal tube to prevent movement of the helical fin in the area of the compressed fins in a direction parallel to the longitudinal axis of the finned tube.

Abstract: Provided are a heat exchanger having a novel structure and efficiently cooling a heat generating body, and a method of manufacturing the heat exchanger. A heat exchanger has flow paths formed by being closed by an upper plate and a lower plate which have rectilinearly formed upstanding fins parallelly arranged at specific intervals, and gaps extend between adjacent fins in the top-bottom direction along the direction in which the fins extend. Either of or both the upper plate and the lower plate are provided with projections arranged in the longitudinal direction of the flow path and projecting inward of the flow path.

Abstract: Systems and methods for the extraction, incineration and monitoring of methane gas extracted from a mine are described herein. In some embodiments, a system includes a transportation platform, a fluid machine coupled to the transportation platform, an incinerator, a vent assembly and a flow interface assembly. The fluid machine is configured to be coupled to a gas well, and to produce a gas flow from the gas well. The incinerator is configured to be fluidically coupled to the fluid machine, and is configured to combust at least a portion of the gas flow from the gas well. The vent assembly is configured to be fluidically coupled to the fluid machine. The flow interface assembly is coupled to the transportation platform and is configured to selectively place the fluid machine in fluid communication with any one of the incinerator and the vent assembly.

Abstract: The present invention relates to a system, apparatus, and method provided to selectively produce petroleum fluid from multiple production zones well. The apparatus comprises a casing running downwardly into the well and a tubing string running in the casing. The upper and lower sealing mechanisms are provided for sealing the annular space between the casing and the tubing string, therefore, dividing the well into upper and lower production zones. Moreover, the invention comprises a bypass gaslift system provided with a tubular member, tubing string, connecting means and side pocket mandrels for injecting lifting gas into the multiple production zones well. The system and apparatus according to this invention can selectively operate to simultaneously or separately produce petroleum fluid from vertical apart multiple zones well.